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M.\P. wlNTHER. METAL' VEHICLE-WHEEL APPLICATION FILED FEB. 6. |920.

Patented Jan. 4, w21.

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M. P. WINTHER.

. AMETAL vEmcLE WHEEL.

APPLICATION FILED FEB- 6. 1920.

1,364,341. n Patented Jan. 4,1921.

2 SHEETS-SHEET 2.

UNITED STATES*`l PATENT f OF1-1.075,--w

MARTIN I?. WINTIIEn, or KENosIIA, WISCONSIN, AssIGNoR To iinNosIIAWHEELv a AXLE COMPANY, OF KENOSIIA, wIscoNsIlxTy` A CORPORATION or WISCONSIN. s,

` n METAL vEIIICLn-WHEEI.. l

Specification of Letters Patent. y

y Application ledFebruary 6, 1920.` Serial'No. 356,628.

To all whom t may concern.'

Be it known that I, MARTIN P. lIN'IHER,

a citizen of the United States, and a resigreater' resistance to the torsional stresses 1 created in the material of the wheels by the l forces acting upon the same in their rota# tion of driving. The `results are accomplished by certain new and novel features of construction pertaining more particularly to the hub of the wheel, as will hereinafter be more fully set forth, and in connection with the accompanying drawings, whereinm Figure 1 is a view in` vertical section-of the wheel as applied in an internal gear drive embodying the features of the invention,

Fig. 2 is a cross-sectional viewof thewheel hub taken on line 2, 2, of Fig. 1, 'with the annular gear wheel removed, and

Fig. 3 is a view in vertical section of the wheel as applied to a live axle' type of drive.

A wheel embodying the features of the invention comprises parts which in general are common to all wheels of cast metal construction, namely, a hub 1, an integral disk or web 2, 'and a transverse peripheral band or felly 3, the web and felly being preferably reinforced by means of a plurality'of radially disposed webs 4, located between the under surface of the felly and either face of the disk 2. The hulol' is-designed to be journaled on the spindle 5 of'theload supporting axle of the vehicle, there being employed roller bearings 6, 6, mounted at either end of the spindle and engaging enlarged annular bearing surfaces 7 ,7 provided for the purpose, and likewise, corresponding in ternal annular bearing surfaoes'on the hub, as will hereinafter be set forth; A nut 8 and thrust collar 9- are mounted on the threaded 4end portionlO of the spindle and retainfthe hub in place.

Patented Jan. 4, 196261,.

The disk or web 2 of the wheel is'p'ro` vided with a plurality of bosses 11 arranged in a circle surrounding `.the hub in close proximity thereto.` These bossesare provided with bolt or rivetgholes 12extending transversely through them. *Fixed Vto the inner yface, of the wheel'is an internal or bosses and secured'by means `of of bolts or rivets 14 extending through the holes 12and y'ring gear wheel 13 engaging the several registering holes `formed in a flange 15 ofthe f gearwheel. Eaoh'of the bosses isr preferably'providedfwith an integral lug 16 bear ing against the Vgear wheel and servingk to kcenter the samefupon the wheel.v n

Referring [now `"more in detailtothe features of construction ofthe wheel and parbe vsaid toy be Ofadouble wall structure, namely an internal wall or rather wall sec tions 17 and 18, andan yexternal wall 319,

ticularly'of the hub l'thereof, the latter 'may fr l spaced from yand yconcentric with 'ther` internalr wallor wall sections 17 and 18. The inner walll sections are rings of thenormal thickness of metal, located at the ends of thehub structure and form the radial bearing surfaces engaging the roller bearingsl 6,

6, said'walls or wall sections 17 and .18 being provided at their finnerends with integral flanges 17a. and 182"` respectivelyy for the retention of said bearings, The longitudinal space between the wall ysections 17 and 18 ispreferably open to permit the proper ycasting of they hub structure, andfurthery `for the reason that a vconnecting wall between them would `be yof no and would be mere excessmetal.

lSurrounding the outermostinternal section-17, and extending to a point midway between said wall sectionsy is an external wall 19 having a diameter considerably greater than the internalwall sections most internal wall section 17 with the corresponding endof the external wall. At the inner end of the external wall 19, an inclined and purpose,

`wall sections yby means of a transverse end wall 20 Ijoining lthe outerend ofthe outer`r slightly concave wall 21 extends between said 'external wall and theladjacent end of the'in*` nermost internal wall section 1S. At the junction of the inclined connecting wall 21 and the external wall 19, the latter' is also connected with the disk or web 2 of the wheel, it vrbeing noted that a comparatively short radial distance separates the external wall of the hub and the bosses which constitute the point of connection of the annular gear 13 to the wheel.

.space between the concentric walls, said webs extending radially between the outer internal wall section 17 and the external wall 19, and transversely from a point midway the ends for said wall section 17, to

` the transverse connecting wall 22.

The hub structure is completed by the hub cap 23 which is applied over the outer end of the hub and secured by means of a plurality of cap screws 24 extending through the marginal flange of the cap and anchored in the end wall 20 of the hub structure.

In Figs. 3 and l is illustrated the application of the same wheel construction in the so-called live axle drive, wherein the wheel is journaled on a hollow dead axle or spindle 25 by means of the pairs of anti-friction bearings 26, 26. A live axle 27 extends throughthe hollow spindle 25 and projects into the hub cap 28 which is keyed to the shaft by the keys or splines 29. The hub cap in turn is fixed to the wheel proper by the capscrews 30. In other respects the wheel construction is the same as heretofore described with the exception of those parts that would, of necessity, be eliminated.

The advantages of the construction herein described and illustrated will be understood from the following: In addition to the vertical or dead weight stress upon a wheel there is also a torsional stress present, due to the application of the turning forces and the frictional and road resistances, opposing the turning force, the latter being substantially constant regardless of the type of drive, although the turning forces vary depending on the point of application of the powers. In the live axle type of drive, the power is applied at the center of the wheel and declined directly to the hub through the hub capk or the circle of screws 30. A great torsion stress is manifestly set-up in the hub,

. varying inversely proportional tothe radius at the 'point of application of the turning force. Furthermore, the power being deliveredv at-the end of the wheel, and offset from the plane of the rim, certain bending stresses are set up in the hub in addition to the torsional stresses. Therefore, by increasing the radius of the hub so that it is equal to or greater than the radius at the point of application of the power, the stresses are distributed throughout a larger circumference and the strain per square inch is correspondingly reduced. In other words, the strength of the hub is materially increased by providing a structure designed with a view of resisting the torsional and bending stresses, which the drive wheel must be subjected to.

In an internal gear type of drive, the power is delivered to the wheel at the web between the hub and the rim. Torsional stresses are likewise set up in the hub, but perhaps varying in magnitude from the stresses of like character in other types of drive, but, nevertheless, are present and demand the necessary strength in the hub to resist them. For example, the side slipping or skidding of the vehicle, and severe road conditions, place extreme and sudden stresses on the wheels, and especially the hub `portions thereof.

To merely increase the thickness of metal of the hub would but partially accomplish the end in view, for by so doing, the weight of metal would be unduly increased. On .2

the other hand, by employing a double wall construction, the strength of the wheel is greatly increased without materially increasing the' mass of metal in the hub, the walls being of the normal, if not reduced, thickness of metal ordinarily required, and the reinforcing webs provide the necessary resistance to the various stresses without adding materially t0 the weight of the wheel.

Having described the features embodying the invention, the same is further set forth in the appended claims, it being understood that I do not wish'to be limited as to thc scope of the invention except as therein specified.

I claim as my invention:

l. A metal wheel comprising integrally cast hub, felly and intermediate web members, said hub member comprising concentrically arranged and radially spaced annular wall sections, the outer wall section having integral connection with said web section, transverse wall sections connecting the ends of said outer wall section with said inner wall section, and a plurality of radially extending webs within the space between said annular wall sections.

2. Ametal wheel comprising integrally cast hub, yfelly,and-intermediate web members, said hub member embracing concentrically arranged andfradially spaced annular wall sections, said outer wall section being integral with said webA membergandal plul rality of webs formedintegral with and extending radially between said annular Wall ameter integrally formed with ysaidy Web sections. member, the latter. being correspondingly 10 3. A metal Wheel comprising hub, felly, deereasedin its radial dimension. and intermediate Web members, east inte- In Witnesswhereof7 I hereunto subscribe` grally of metal of *substantiall uniform my name this 3l kdayiof December, A. D.y thickness, said hub member consisting of'a. 1919. n, i f n radially reinforced hollow structure having y n f i y l an outer Wall of relatively increased di- MARTIN WINTI-IER. 

